<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>天气案例</title>
   <!-- 引入Vue -->
   <script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>   
</head>
<body>
     <!-- 准备一个容器 -->
    <div id="root">
        <h1>今天天气很{{info}},{{x}}</h1>
        <button @click="changeWeather">切换天气</button>
        <!-- 绑定事件的时候：@xxx="yyy"   yyy可以写一些简单的语句 -->
        <button @click="isHot = !isHot;x++">切换天气</button>
    </div>
</body>
<script type="text/javascript">
    Vue.config.productionTip = false;  // 阻止 vue 在启动时生成生产提示。
    
    // 创建Vue实例
    new Vue({
        el: '#root',
        data: {
          isHot:true,
          x:1
        },
        computed: {
            info(){
                return this.isHot ? '炎热' : '凉爽'
            }
        },
        methods: {
            changeWeather(){
                this.isHot = !this.isHot
                this.x++
            }
        },
    })
</script>
</html>